Finding the Fourth Proportional to 639,381.60, 957,808.80 and 324,064.80
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Solution
The fourth proportional to 639,381.60, 957,808.80 and 324,064.80 is: 485,456.76
Step by Step Solution
- Step 1: Write the proportion equation
639,381.60 : 957,808.80 = 324,064.80 : x - Step 2: Convert to fraction form
639,381.60/957,808.80 = 324,064.80/x - Step 3: Cross multiply
639,381.60x = 957,808.80 × 324,064.80 - Step 4: Simplify right side
639,381.60x = 310,392,117,210.24 - Step 5: Solve for x
x = 310,392,117,210.24/639,381.60 - Step 6: Final answer
x = 485,456.76
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.